基于电机效率优化的纯电动汽车换挡规律  

Shift Schedule of Electrical Vehicle based on the Optimization of Motor Efficiency

作　　者：李伟 阴晓峰[1] 武小花[1] 

机构地区：[1]西华大学汽车工程研究所,四川成都610039

出　　处：《机械传动》2014年第1期150-153,共4页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(51375402);四川省应用基础研究计划项目(2013JY0088);汽车仿真与控制国家重点实验室开放基金(20121115);西华大学研究生创新基金(YCJJ201376);四川省教育厅自然科学重点项目(10ZA100)

摘　　要：电动汽车参数匹配及控制策略优化，是提高电动汽车性能的重要手段之一。针对具有3挡机械自动变速器的纯电动汽车，提出了基于最佳效率的换挡规律优化方法并制定了最佳效率换挡规律，同时与最佳动力性换挡规律进行性能比较。以0～100km／h加速时间以及ECE＋EUDC循环工况能耗为评价指标，通过MATLAB／Simulink建模和仿真，分析了两种换挡规律对整车性能的影响。结果表明：最佳动力性换挡规律的加速时间比最佳效率换挡规律少7．4％；而最佳效率换挡规律的ECE＋EUDC循环工况能耗比最佳动力性换挡规律少9．4％。The parameter matching and control strategy optimization is one of the important means to improve the performance of electric vehicles. Aiming at electric vehicle equipped with 3--speed automated manual transmission, an optimization method for shift schedule based on optimal efficiency is put forward, and the optimal efficiency shift schedule is established. Furthermore, the performance of both optimal efficiency and optimal drive.ability shift schedules are compared. The influences of both shift schedules on the vehicle performance including the acceleration time from 0 to 100 km/h and the energy constmaption during an ECE＋EUDC cycle are analyzed through system modeling and simulation by using MATLAB/Simulink. Results show that the acceleration time of the optimal driveability shift schedule is 7. 4% less than that of the optimal efficiency shift schedule, while the energy consumption of the optimal efficiency shift schedule during the ECE ＋ EUDC cycle is 9. 4% less than that of the optimal driveability shift schedule.

关 键 词：纯电动汽车 参数匹配 换挡规律 效率 动力性 

分 类 号：U469.72[机械工程—车辆工程]